(a) An experimental RF data set was obtained, courtesy of Verasonics, Inc. This data set proved especially amenable to accelerated reconstructions, even with a receive beamforming algorithm. Very high acceleration factors were obtained, and images for n = 2, 8, 16, and 32 are shown here, to be compared with the reference n = 1 case. Although receive beamforming also generated images of reasonable quality, images reconstructed with our proposed algorithm proved superior, as shown in Fig. 10. ROI = region of interest.